When I decide to exercise my brain I play Sudoku. When Youtube user Derwood exercises his brain he legally creates a semi-automatic gun that 95 per cent 3D printed and completely untraceable. Read more >>

What happens if a .50 caliber firearm shoots a bullet that goes right through a barrel of shotgun? If you aim it perfectly does it just go right through the opposite direction? Could you maybe even use the shotgun after? FullMag sought answers and decided to try it twice. Watch it all now >>